Kelly Osbourne is returning to social media following the death of her dad, Ozzy Osbourne.

On Tuesday (July 22), the Osbourne family announced that the Black Sabbath rocker had passed away at the age of 76 following a long battle with Parkinson’s disease.

Two days after his passing, Kelly, 40, took to her Instagram Story to share a brief message mourning her father.

Keep reading to find out more…“I feel unhappy I am so sad. I lost the best friend I ever had,” Kelly wrote along with the broken heart emoji.

Ozzy‘s death comes just two weeks after his performed his final concert with Black Sabbath on July 5 Villa Park in Birmingham, England. Moments after the show, Kelly‘s boyfriend Sid Wilson proposed to her in front of her dad.

Multiple stars have penned touching tributes to Ozzy Osbourne after his passing.